I think people are focusing on the 64GB recommendation itself and missing the bigger picture.
What really stands out to me is how odd the hardware recommendations are. If a game genuinely needed 64GB of system RAM, I'd expect it to also recommend a high end GPU like an RTX 5080 or 5090. Instead, it's recommending an RTX 4060, which is a midrange card. Pairing that with a Ryzen 7 7800X3D and 64GB of RAM is not a balanced system.
That makes me think one of two things...either these are placeholder requirements that haven't been updated yet, or the game still has a lot of optimization work ahead of it.
DRAM prices have been climbing, 64GB is becoming a much more expensive upgrade than it was a year or two ago. If games start recommending 64GB as the norm before memory prices come back down, that's going to raise the cost of PC gaming for everyone... and PC gaming is already looking meek.
Most modern titles run perfectly well with 32GB or less, and very very few come anywhere close to using more than 32GB under normal conditions. Until independent reviews and benchmarks are available, I would take this with a grain of salt.
If the final release truly requires 64GB just to run well on an RTX 4060, I think that says more about the game's optimization than it does anything else.